Water heater end cover
By designing the exhaust and sealing mechanisms of the water heater end cap, the problems of difficult installation and poor sealing were solved, achieving convenient installation and efficient sealing, and extending the service life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- QINGDAO FUKAI PRECISION TECH CO LTD
- Filing Date
- 2025-04-22
- Publication Date
- 2026-04-21
AI Technical Summary
Existing water heater end caps suffer from installation difficulties, low installation efficiency, and poor sealing.
A water heater end cap was designed, comprising an outer shell, a protective shell, an exhaust mechanism, a sealing mechanism, and a snap-fit end. The exhaust mechanism discharges gas, the snap-fit end and the sealing element improve the sealing performance, and the snap-fit end and the inner edge of the connection enhance stability.
It enables convenient installation, improves the installation efficiency and sealing of water heaters, avoids water leakage, and extends the service life of end caps.
Smart Images

Figure CN224151177U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of water heater end cap technology, specifically a water heater end cap. Background Technology
[0002] A water heater is a device that uses various physical principles to raise the temperature of cold water to hot water within a certain time and absorbs a large amount of heat energy from the air. The gaseous working fluid is compressed into a high-temperature, high-pressure liquid by the compressor, and then enters the condenser to release heat and heat the water. The side cover of the water heater is very important.
[0003] However, existing water heater end caps are difficult to install, have low installation efficiency, and poor connection tightness during use.
[0004] To address the aforementioned deficiencies, Chinese Patent Publication No. CN219550853U discloses a water heater end cap and a water heater, including an outer shell and an inner tank, used to seal the end of the water heater outer shell. The water heater end cap includes an end cap body, which includes an inner end face and an outer end face. The periphery of the end cap body has a connecting inner edge extending inward toward the inner end face and a connecting outer edge extending outward toward the outer end face. The connecting inner edge and the connecting outer edge are gradually expanding in shape. The end dimensions of the connecting inner edge and the connecting outer edge are both larger than the inner wall of the outer shell, ensuring a tight interference fit with the inner wall of the outer shell and preventing the foam material from overflowing. Since the connecting inner edge and the connecting outer edge are in opposite directions, the water heater end cap has a larger deformation space during the actual installation process, making the actual installation process more convenient and quick, and improving installation efficiency.
[0005] The above-mentioned device facilitates a tight connection between the inner and outer edges of the connector during use. However, the inner and outer edges of the connector only tightly connect with the outer shell, resulting in poor sealing of the end cap body. This can easily lead to water leakage, thus causing poor sealing of the end cap body in actual use. Utility Model Content
[0006] The purpose of this utility model is to provide a water heater end cap to solve the problem of poor sealing performance of the end cap body mentioned in the background art.
[0007] To achieve the above objectives, this utility model provides the following technical solution: a water heater end cap, comprising an outer shell, an end cap body fixedly installed at the top of the outer shell, a protective shell fixedly installed at the bottom of the outer shell, an opening at the inner side of the outer shell, and an exhaust mechanism provided between the outer shell and the protective shell; a protective sleeve fixedly installed on the inner side of the outer shell, a retainer fixedly installed on the inner side of the end cap body, and a sealing mechanism provided between the end cap body and the protective sleeve.
[0008] Furthermore, a receiving cavity is fixedly installed on the inner side of the protective sleeve, and a connector is fixedly installed on the inner side of the receiving cavity. The receiving cavity and the connector form an integral structure.
[0009] Furthermore, the exhaust mechanism includes an exhaust port, which is fixedly installed on the outer surface of the connector and the inner side of the end cap body, and the connector is fixedly installed on the outer surface of the end cap body.
[0010] Furthermore, an annular mounting groove is fixedly installed on the top of the end cap body, a snap-fit end is fixedly installed on the inner side of the annular mounting groove, and a pressure plate is fixedly installed on the outer surface of the snap-fit end.
[0011] Furthermore, the sealing mechanism includes a sealing element, which is fixedly installed on the outer surface of the snap-fit end. A first snap-fit portion is fixedly installed on the outer surface of the snap-fit end, and the snap-fit end and the sealing element form an integral structure.
[0012] Furthermore, a second snap-fit portion is fixedly installed on the outer surface of the snap-fit end, and limit ends are fixedly installed on both sides of the second snap-fit portion, and the limit ends are fixedly installed on the outer surface of the snap-fit end.
[0013] Furthermore, a reinforcing plate is fixedly installed on the outer surface of the snap-fit end, a connecting inner edge is fixedly installed on the outer surface of the snap-fit end, and pressure plates are fixedly installed on both sides of the connecting inner edge.
[0014] Compared with the prior art, the beneficial effects of this utility model are:
[0015] (1) The protective sleeve on the outer shell surface enhances the protection of the cavity, and the operation of the exhaust port and connector facilitates the discharge of gas from the inner end of the end cap body, thereby improving the internal gas circulation of the water heater during use.
[0016] (2) The annular mounting groove of the end cover body facilitates the installation of the end cover body, and the snap-fit end facilitates the snap-fit into the water heater, thereby realizing the installation of the end cover body and the water heater.
[0017] (3) The first snap-fit part installed on the outer surface of the snap-fit end facilitates the snap-fit of the end cover body. The sealing element is set to increase the overall sealing performance and prevent the end cover body from loosening. By manually rotating the protective shell, the protective shell drives the outer shell to rotate, and the outer shell drives the end cover body to rotate, thus making it easy to snap the first snap-fit part and the second snap-fit part into the water heater. The inner edge of the connection is used to improve the overall stability.
[0018] (4) The overall strength is improved by setting pressure plates and reinforcing plates to avoid damage to the end cap body due to collisions and to improve the service life of the end cap body. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0020] Figure 2 This is a schematic diagram of the cross-sectional structure of the outer shell of this utility model;
[0021] Figure 3 This is a three-dimensional structural diagram of the snap-fit end of this utility model;
[0022] Figure 4 This is a three-dimensional structural diagram of the protective sleeve of this utility model;
[0023] Figure 5 This is a three-dimensional structural diagram of the end cap body of this utility model;
[0024] Figure 6 This is a cross-sectional structural diagram of the connector of this utility model.
[0025] In the diagram: 1. Outer shell; 2. End cap body; 3. Protective shell; 4. Notch; 5. Protective sleeve; 6. Receiving cavity; 7. Exhaust port; 8. Connector; 9. Card holder; 10. Annular mounting groove; 11. Snap-fit end; 12. Pressure plate; 13. Seal; 14. First snap-fit part; 15. Second snap-fit part; 16. Limiting end; 17. Reinforcing plate; 18. Connecting inner edge. Detailed Implementation
[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0027] Example 1: Please refer to Figure 1 - Figure 6 The present invention provides the following technical solution: a water heater end cap, comprising an outer shell 1, an end cap body 2 fixedly installed on the top of the outer shell 1, a protective shell 3 fixedly installed on the bottom surface of the outer shell 1, an opening 4 on the inner side of the outer shell 1, and an exhaust mechanism provided between the outer shell 1 and the protective shell 3; a protective sleeve 5 fixedly installed on the inner side of the outer shell 1, a retainer 9 fixedly installed on the inner side of the end cap body 2, and a sealing mechanism provided between the end cap body 2 and the protective sleeve 5.
[0028] The exhaust mechanism between the outer casing 1 and the protective casing 3 facilitates the discharge of internal gas, thereby preventing gas from accumulating inside. The sealing mechanism between the end cap body 2 and the protective sleeve 5 improves the sealing performance of the water heater.
[0029] Example 2: Based on Example 1, please refer to... Figure 1 - Figure 6 The connector 8 is also disclosed, and its specific structure is as follows: a receiving cavity 6 is fixedly installed on the inner side of the protective sleeve 5, and a connector 8 is fixedly installed on the inner side of the receiving cavity 6. The receiving cavity 6 and the connector 8 form an integral structure. The exhaust mechanism includes an exhaust port 7, which is fixedly installed on the outer surface of the connector 8. The exhaust port 7 is fixedly installed on the inner side of the end cap body 2, and the connector 8 is fixedly installed on the outer surface of the end cap body 2. An annular mounting groove 10 is fixedly installed at the top of the end cap body 2. A snap-fit end 11 is fixedly installed on the inner side of the annular mounting groove 10, and a wire clamping plate 12 is fixedly installed on the outer surface of the snap-fit end 11.
[0030] The protective sleeve 5 on the surface of the outer shell 1 enhances the protection of the receiving cavity 6. The operation of the exhaust port 7 and the connector 8 facilitates the discharge of gas from the inner end of the end cap body 2, thereby improving the internal gas circulation of the water heater during use. The annular mounting groove 10 installed on the end cap body 2 facilitates the installation of the end cap body 2, and the snap-fit end 11 facilitates the snap-fit into the inside of the water heater, thus realizing the installation of the end cap body 2 and the water heater.
[0031] Example 3: Based on Example 1, please refer to... Figure 2 - Figure 6 The sealing element 13 is also disclosed, and its specific structure is as follows: The sealing mechanism includes the sealing element 13, which is fixedly installed on the outer surface of the snap-fit end 11. A first snap-fit part 14 is fixedly installed on the outer surface of the snap-fit end 11, and the snap-fit end 11 and the sealing element 13 form an integral structure. A second snap-fit part 15 is fixedly installed on the outer surface of the snap-fit end 11. Limiting ends 16 are fixedly installed on both sides of the second snap-fit part 15, and the limiting ends 16 are fixedly installed on the outer surface of the snap-fit end 11. A reinforcing plate 17 is fixedly installed on the outer surface of the snap-fit end 11. A connecting inner edge 18 is fixedly installed on the outer surface of the snap-fit end 11, and pressure plates 12 are fixedly installed on both sides of the connecting inner edge 18.
[0032] The first snap-fit part 14 installed on the outer surface of the snap-fit end 11 facilitates the snap-fit of the end cover body 2. The sealing element 13 increases the overall sealing performance and prevents the end cover body 2 from loosening. By manually rotating the protective shell 3, the protective shell 3 drives the outer shell 1 to rotate, and the outer shell 1 drives the end cover body 2 to rotate, thereby facilitating the snap-fit of the first snap-fit part 14 and the second snap-fit part 15 into the water heater. The connecting inner edge 18 improves the overall stability, and the pressure plate 12 and reinforcing plate 17 improve the overall strength, preventing the end cover body 2 from being damaged by collision and extending the service life of the end cover body 2.
[0033] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0034] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A water heater end cap, comprising a housing (1), wherein an end cap body (2) is fixedly mounted on the top of the housing (1), characterized in that: A protective shell (3) is fixedly installed on the bottom surface of the outer shell (1), and there is a notch (4) on the inner side of the outer shell (1). An exhaust mechanism is provided between the outer shell (1) and the protective shell (3). A protective sleeve (5) is fixedly installed on the inner side of the outer shell (1), a card seat (9) is fixedly installed on the inner side of the end cap body (2), and a sealing mechanism is provided between the end cap body (2) and the protective sleeve (5).
2. A water heater end cap as claimed in claim 1, characterised in that: The inner side of the protective sleeve (5) is fixedly installed with a receiving cavity (6), and the inner side of the receiving cavity (6) is fixedly installed with a connector (8). The receiving cavity (6) and the connector (8) form an integral structure.
3. A water heater end cap as claimed in claim 1, wherein: The exhaust mechanism includes an exhaust port (7), which is fixedly installed on the outer surface of the connector (8). The exhaust port (7) is fixedly installed on the inner side of the end cap body (2), and the connector (8) is fixedly installed on the outer surface of the end cap body (2).
4. A water heater end cap as claimed in claim 3, characterised in that: The top of the end cap body (2) is fixedly installed with an annular mounting groove (10), the inner side of the annular mounting groove (10) is fixedly installed with a snap-fit end (11), and the outer surface of the snap-fit end (11) is fixedly installed with a pressure plate (12).
5. The end cap of claim 1, wherein: The sealing mechanism includes a sealing element (13), which is fixedly installed on the outer surface of the snap-fit end (11). A first snap-fit part (14) is fixedly installed on the outer surface of the snap-fit end (11), and the snap-fit end (11) and the sealing element (13) form an integral structure.
6. A water heater end cap according to claim 5, characterized in that: A second snap-fit part (15) is fixedly installed on the outer surface of the snap-fit end (11), and limit ends (16) are fixedly installed on both sides of the second snap-fit part (15), and the limit ends (16) are fixedly installed on the outer surface of the snap-fit end (11).
7. A water heater end cap as claimed in claim 6, characterised in that: A reinforcing plate (17) is fixedly installed on the outer surface of the snap-fit end (11), and a connecting inner edge (18) is fixedly installed on the outer surface of the snap-fit end (11), and pressure plates (12) are fixedly installed on both sides of the connecting inner edge (18).
Citation Information
Patent Citations
Water heater end cover and water heater
CN219550853U